* {
    padding: 0;
    margin: 0;
    box-sizing:border-box;

}
body{
    overflow: hidden;
    overflow-y: scroll;
}
ul li {
    list-style: none;
}
a{
    text-decoration: none;
}
.big_box{
    width: 100%;
    height:1800px;
    position: relative;
    margin: 0 auto;
}
.header_box{
    width: 100%;
}
.header{
    width: 100%;
    z-index: 2;
    background: rgb(225, 225, 225);
    background: rgba(192, 193, 158, 0.3);
    /*position: relative;*/
    position: absolute;
    top: 0;
}
.nav{
    position: absolute;
    width: 450px;
    height: 40px;
    margin: 0 0 0 400px;
    top:0;
}
.nav ul {
    width: 100%;
    height: 40px;
    margin: 0 auto;
}
.nav ul li{
    display: inline;
    height: 40px;
}
.nav ul li a{
    padding: 0 20px;
    display: inline-block;
    height: 40px;
    line-height: 40px;
    font-size: 13px;
    color: white;
}
.photo{
    width: 450px;
    height: 40px;
    margin: 0 0 0 110px;
}
.photo img{
    max-width: 100%;
    height: 40px;
    display: block;
}
.bg img{
    width: 100%;
    height: 440px;
}
.content{
    position: absolute;
    top:0;
    /*overflow: hidden;*/
}
.content img{
    width: 100%;
    height: 443px;
    z-index: 1;
}
.logo{
    width: 100%;
    position: absolute;
    z-index: 3;
    top: 30%;
    left: 48%;
}
.intro{
    z-index: 4;
    width: 100%;
}
.content .logo img{
    width: 50%;
    height: auto;
}
.pho img{
    width: 100px;
    height: 100px;
    position: absolute;
    top: 15%;
    left: 60%;
    border-radius: 100%;
}
.middle_box{
    width: auto;
    position: absolute;
    top:28%;
}
.intro h1{
    text-align: center;
    width: 140px;
    margin: 10px auto 20px auto;
    font-size: 1.5em;
    border-bottom: rgba(6, 7, 4, 0.47) 4px solid;
}
.box{
    width: 45%;
    height: 150px;
    background-color: rgba(86, 242, 255, 0.1);
    border-radius: 30px;
    display: inline-block;
    position: relative;
    margin: 5px;
}
.box_content{
    width: 60%;
    padding-left: 10%;
}
.box_content h2{
    text-align: center;
    padding-top: 20px;
}
h2{
    font-size: 1em;
    display: block;
}
.box_content p{
    font-size: 0.6em;
    letter-spacing: 2px;
    padding: 20px 20px 0 20px;
    line-height: 15px;
}
.container{
    margin: 10px 0 0 80px;
}
.works_box{
    width: auto;
    position: absolute;
    top:52%;
}
.w_intro{
    width: 100%;
    /*background-color: rgb(123, 170, 190);*/
}
.w_intro h2{
    text-align: center;
    width: 120px;
    margin: 20px auto 10px auto;
    font-size: 1.3em;
    border-bottom: rgba(6, 7, 4, 0.47) 4px solid;
}
.works{
    width: 100%;
    position: relative;
}
.works img{
    width: 60%;
    height: auto;
    border-radius: 20px;
    border-shadow: 3px 3px 18px 0px rgba(6, 7, 4, 0.5);
}
.works{
    margin: 20px 0 0 180px;
}
.introduce{
    position: absolute;
    top: 93%;
    left: 25%;
}
.introduce p{
    font-size: 0.66em;
    color: white;
}
.footer_box{
    position: absolute;
    top:75%;
    width: 100%;
}
.f_contain{
    margin: 40px 0 0 40px;
}
.f_intro h2{
    text-align: center;
    width: 200px;
    margin: 20px auto 10px auto;
    font-size: 1.3em;
    border-bottom: rgba(6, 7, 4, 0.47) 4px solid;
}
.small_box{
    width: 30%;
    display: inline-block;
}
.small_box img{
    width: 150px;
    height: 150px;
}
.small_box h3{
    text-align: center;
    padding: 10px;
}
.f_contain .small_box p{
    margin: 0 auto;
    text-align: center;
    padding: 20px 75px;
    font-size: 0.6em;
    color: #929292;
}
.footer_box .small_box div{
    margin: 0 auto;
    width: 150px;
}
.bottom_box{
    width: 100%;
    position: absolute;
    top:100%;
    background-color: #393536;
    display: inline-block;
}
.bottom_content{
    width: 100%;
}
.bottom_box .bottom_content .left div{
    width: 150px;
    margin: 0 auto;
 }
.bottom_box .left img{
    width: 100%;
}
.bottom_box .left p{
    font-size: 0.7em;
    padding: 10px 0 0 50px;
    color: white;
}
.left{
    width: 350px;
    margin: 0 0 0 130px;
    display: inline-block;
}
.right{
    width: 400px;
    display: inline-block;
    margin: 10px 0 0 10px;
}
.bottom_box .bottom_content .right .qt{
     width: 150px;
     height: 90px;
 }

.bottom_box .bottom_content .right div{
    width: 100%;
    margin: 0 0 0 35px;
    display: inline-block;
}
.bottom_box .right img{
    width: 50px;
    height: 50px;
}
.bottom_box .right .qt p{
    font-size: 0.7em;
    color: white;
    padding: 10px 20px 0 0;
    display: inline;
}
